Article submissions can increase and improve the ranking of your online business in search engines by increasing the quantity of backlinks and PR.
Another benefit that article submission offers is that of establishing the particular website owner as an expert in their industry. By providing valuable detail and information within articles, it builds the trust of potential customers thereby giving them a reason to visit your website.
Submitting articles to other sites will build up your reputation as an authority in your subject matter. It will also provide you with back links from high ranking sites that have relevant keywords to your site content. It can be very time consuming but it is worth it in the end, I recommend trying to do a couple articles a week and build from there if you have the time.